—Who helped Betty tidy up the bedroom just now?—_________. She cleaned it all by herself.

After working for two hours, I found       impossible to complete the paper in time.

 －Which magazine do you like better, Crazy Reading or Teens' Space?－I like      of them. They are useful for English learners.

I asked for some more cake, but there was               left.

 Why don’t you bring ______ to his attention that you are too busy to do it?